40019616 has 192 divisors, whose sum is σ = 143942400. Its totient is φ = 10533888.

The previous prime is 40019591. The next prime is 40019621. The reversal of 40019616 is 61691004.

40019616 is a `hidden beast` number, since 40 + 0 + 1 + 9 + 616 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 40019616.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78370 + ... + 78878.

It is an arithmetic number, because the mean of its divisors is an integer number (749700).

Almost surely, 2^40019616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40019616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71971200).

40019616 is an abundant number, since it is smaller than the sum of its proper divisors (103922784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40019616 is a wasteful number, since it uses less digits than its factorization.

40019616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548 (or 534 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 40019616 is about 6326.1059112222. The cubic root of 40019616 is about 342.0510850129.

The spelling of 40019616 in words is "forty million, nineteen thousand, six hundred sixteen".